Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e740f5eb79e1e9…

MALICIOUS

PDF

55.6 KB Created: 2020-08-17 04:38:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1445b3555da71e5c7c7c4024c3dfaadf SHA-1: e5e6fa153cf98c0f4b17d024e893b0a55dd999e0 SHA-256: 10e740f5eb79e1e9f97bcbcf37b7a340c22c39f8e5b3d21933c79ceb08442972
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'https://ttraff.com/pify?keyword=aaa+driving+school+test+answers'. The document body, though heavily obfuscated, contains text related to driving school test answers, suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=aaa+driving+school+test+answers
    • http://rubozo.latinoartandfashion.com/uploads/1/3/2/8/132815180/bivenuxebotivopegi.pdf
    • http://files.pcweeds.org/uploads/1/3/0/7/130739154/5810857.pdf
    • http://files.buyboxblog.com/uploads/1/3/0/7/130775998/zuliduba-fijixa-pulowaxiwikuva.pdf
    • http://files.brightonelmtrees.com/uploads/1/3/0/8/130815026/4678652.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/18418399461.pdf
    • https://cdn.shopify.com/s/files/1/0428/3331/3958/files/corrugated_roof_sheet_sizes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/liftmaster_893max_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/28918333954.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2715/files/tavurif.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/96050068042.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/titulojotoviwoxufekimaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/43373491537.pdf
    • https://cdn.shopify.com/s/files/1/0427/8448/9631/files/90533048044.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2443/files/winavexakuguxiwawofotujob.pdf
    • https://cdn.shopify.com/s/files/1/0437/6897/1415/files/ovpn_configuration_file.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3768/files/fukadolozezobupikujiza.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/16985540437.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000098d0.bin
ee200320a066016e2689db7d0bf8106216fd6d248c35b6295c3685b85571643a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98D0 5344 bytes
font_01_sfnt_off0000ab07.bin
8fa35d1b5b1e1d9dd1da2a4213a588de674f542b8b9a0702d48f108cdc8b26f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB07 11216 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.